JPH06186091A - Device for monitoring premise of factory or like - Google Patents
Device for monitoring premise of factory or likeInfo
- Publication number
- JPH06186091A JPH06186091A JP34005392A JP34005392A JPH06186091A JP H06186091 A JPH06186091 A JP H06186091A JP 34005392 A JP34005392 A JP 34005392A JP 34005392 A JP34005392 A JP 34005392A JP H06186091 A JPH06186091 A JP H06186091A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- point
- monitoring
- premises
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Alarm Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はプラントや工場等の構内
の監視装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring device in a premises such as a plant or factory.
【０００２】[0002]
【従来の技術】温度の変化により光ファイバの光学的特
性が変化することを利用し、レーダーの原理により光フ
ァイバの各個所の温度を測定する装置が光ファイバ分布
型温度測定装置として知られている。即ち、この装置
は、光ファイバ中を伝播するレーザパルス光の後方散乱
光の強度が、各個所の光ファイバの温度に依存して変化
する現象を利用することにより、光ファイバ自体をセン
サとして、その周囲の温度を分布的に測定するものであ
る。2. Description of the Related Art A device for measuring the temperature of each part of an optical fiber by the principle of a radar is known as an optical fiber distributed temperature measuring device by utilizing the fact that the optical characteristic of the optical fiber is changed by the change of temperature. There is. That is, this device uses the phenomenon in which the intensity of the backscattered light of the laser pulse light propagating in the optical fiber changes depending on the temperature of the optical fiber at each location, and the optical fiber itself is used as a sensor. The ambient temperature is measured in a distributed manner.
【０００３】そして、このような分布型温度測定装置を
利用し、監視対象装置の各個所の温度を監視する装置が
知られている。例えば特開平4-72389号公報に開示のも
のは、ＬＮＧ気化器を監視対象装置とするものである。There is known a device that uses such a distributed temperature measuring device to monitor the temperature of each part of the device to be monitored. For example, the one disclosed in Japanese Patent Application Laid-Open No. 4-72389 uses an LNG vaporizer as a monitoring target device.
【０００４】[0004]
【発明が解決しようとする課題】上述した装置は専ら装
置の温度を単一の監視対象としており、工場等の構内の
各種装置等の設備の監視用として総合的に利用すること
は行われていない。本発明はこのような課題を解決する
ことを目的とするものである。SUMMARY OF THE INVENTION The above-mentioned device is intended to monitor the temperature of the device as a single target, and is not used comprehensively for monitoring equipment such as various devices on the premises of a factory or the like. Absent. The present invention aims to solve such problems.
【０００５】[0005]
【課題を解決するための手段】上述した課題を解決する
ために、本発明では、パルス光の送受信装置に接続した
光ファイバを、工場等の構内における監視対象個所に渡
って設置すると共に、該光ファイバの適宜距離離れた少
なくとも２地点に多重化装置を介して光通信用の送受信
装置を設置した工場等の監視装置を提案する。In order to solve the above-mentioned problems, according to the present invention, an optical fiber connected to a transmission / reception device for pulsed light is installed over a monitoring target location in a premises such as a factory, and We propose a monitoring device such as a factory in which a transmitting / receiving device for optical communication is installed at least at two points appropriately separated from each other through an optical fiber.
【０００６】[0006]
【作用】光ファイバの光学的特性の変化は、温度の変化
に起因するばかりでなく、外力による歪や、水分を吸収
することによる材質変化によっても発生する。このため
このような変化に対応する監視対象、即ち、温度はもと
より外力や水分の監視を行うことができる。The change in the optical characteristics of the optical fiber is caused not only by the change of the temperature but also by the strain due to the external force or the change of the material due to the absorption of moisture. Therefore, it is possible to monitor the external force and moisture as well as the temperature of the monitoring target corresponding to such a change.
【０００７】従って、パルス光の送受信装置に接続した
センサとしての光ファイバを工場等の構内における所望
の監視対象個所に渡って設置することにより、設備等の
総合的な監視を簡単な構成で行うことができる。Therefore, by installing an optical fiber as a sensor connected to a pulse light transmitting / receiving device over a desired monitoring target location in a premises such as a factory, comprehensive monitoring of equipment and the like is performed. be able to.
【０００８】一方、構内と他の個所の間または構内間で
は、通話や各種データの伝送のために通信回線が必要で
あるが、この通信回線としては上述したセンサとしての
光ファイバを利用することができる。即ち、この光ファ
イバの適宜距離離れた少なくとも２地点に多重化装置を
介して光通信用の送受信装置を設置すれば、この送受信
装置間で通信を行うことができる。On the other hand, a communication line is required between the premises and another place or between the premises for communication of telephone calls and transmission of various kinds of data. As the communication line, an optical fiber as the above-mentioned sensor should be used. You can That is, if a transceiver for optical communication is installed at at least two points on the optical fiber at appropriate distances via a multiplexer, the transceiver can communicate with each other.
【０００９】[0009]
【実施例】次に本発明の実施例を図について説明する。
図１は本発明の装置の全体構成を示す系統図であり、図
中２点鎖線の右側が工場等の構内を示すものである。Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 is a system diagram showing the overall configuration of the apparatus of the present invention, and the right side of the two-dot chain line in the figure shows the premises of a factory or the like.
【００１０】符号１は監視装置本体であり、この監視装
置本体１はパルス光の送受信装置２と、この送受信装置
２を制御し、またここからの信号を処理して後述するよ
うな所定の監視動作を行う処理装置３とディスプレー装
置４から構成している。Reference numeral 1 is a monitoring device main body, and the monitoring device main body 1 controls the pulsed light transmitting / receiving device 2 and the transmitting / receiving device 2, and processes signals from the transmitting / receiving device 2 to perform predetermined monitoring as described later. It is composed of a processing device 3 and a display device 4 which operate.
【００１１】符号５は送受信装置２に接続した光ファイ
バであり、この光ファイバ５を構内の監視対象個所に渡
って設置している。これらの設置個所を説明すると、ま
ず符号６は構内のピットであり、光ファイバ５はピット
６内の所定の高さに設置している。符号７，８はバルブ
であり、これらのバルブ７，８の開閉動作において光フ
ァイバ５に引張力等の歪が加わる位置に光ファイバ５を
設置している。また符号９は配管であり、光ファイバ５
はこの配管９の距離を隔てた２点間に支持部材１０によ
り張設している。一方、符号１１，１２は光通信用の送
受信装置であり、これらの送受信装置１１，１２は、夫
々多重化装置１３，１４を介して光ファイバ５の２地点
に構成している。Reference numeral 5 denotes an optical fiber connected to the transmitter / receiver 2, and the optical fiber 5 is installed over the monitoring target points on the premises. Explaining these installation locations, first, reference numeral 6 is a pit on the premises, and the optical fiber 5 is installed at a predetermined height in the pit 6. Reference numerals 7 and 8 denote valves, and the optical fiber 5 is installed at a position where strain such as tensile force is applied to the optical fiber 5 during opening / closing operation of the valves 7 and 8. Reference numeral 9 is piping, and the optical fiber 5
Is stretched by a support member 10 between two points of the pipe 9 which are separated from each other. On the other hand, reference numerals 11 and 12 are transmitters / receivers for optical communication, and these transmitters / receivers 11 and 12 are formed at two points of the optical fiber 5 via multiplexers 13 and 14, respectively.
【００１２】以上の構成において送受信装置２からは、
例えば波長1.5μmのレーザ・パルス光を光ファイバ５に
送信すると、パルス光は光ファイバ５を伝播する際、隣
接個所と温度差がある個所、外力等により歪のある個
所、または水分の吸収により材質が劣化している個所等
において一部散乱し、後方散乱光として送受信装置２に
戻る。In the above configuration, the transmitter / receiver 2
For example, when a laser pulsed light with a wavelength of 1.5 μm is transmitted to the optical fiber 5, the pulsed light propagates through the optical fiber 5 due to a temperature difference from an adjacent point, a point distorted by an external force, or absorption of moisture. A part of the material is deteriorated and scattered, and the light is returned to the transmitter / receiver 2 as backscattered light.
【００１３】例えばピット６内が浸水していて光ファイ
バ５が浸かっていると、光ファイバ５に水分が吸着され
て材質が劣化して、この部分において透過光の散乱が生
じる。また符号１５で示す地点に火災が発生して光ファ
イバ５が局部的に加熱されると、この部分において透過
光の散乱が生じる。逆に配管等から低温流体が漏洩して
いて、この低温流体により符号１６で示す地点において
光ファイバ５が局部的に冷却されると、この部分におい
ても透過光の散乱が生じる。更にバルブ７，８において
は、それらの開度に応じた歪により、この部分において
透過光の散乱が生じる。また配管９個所に設置した部分
においては、支持部材１０間の距離がなんらかの原因に
よって拡がると、この部分の光ファイバ５に引張力が加
わって歪が生じるので、この部分において透過光の散乱
が生じる。For example, if the inside of the pit 6 is submerged and the optical fiber 5 is submerged, moisture is adsorbed to the optical fiber 5 and the material is deteriorated, and the transmitted light is scattered at this portion. When a fire occurs at the point indicated by reference numeral 15 and the optical fiber 5 is locally heated, the transmitted light is scattered at this portion. On the contrary, when the low temperature fluid leaks from the pipes and the low temperature fluid locally cools the optical fiber 5 at the point indicated by reference numeral 16, the transmitted light is scattered also in this portion. Further, in the bulbs 7 and 8, the transmitted light is scattered at this portion due to the strain corresponding to the opening degree thereof. In addition, if the distance between the support members 10 is expanded at some portions installed at the nine pipes due to some cause, a tensile force is applied to the optical fiber 5 at this portion to cause distortion, so that scattering of transmitted light occurs at this portion. .
【００１４】処理装置３は送受信装置２からの信号にお
いて、反射してきた後方散乱光の遅延時間から散乱の発
生個所の位置を光ファイバ５に沿った距離として求める
ことができ、これと光ファイバ５の設置データとから後
方散乱光の発生地点に対応する構内の位置を特定するこ
とができる。また反射してきた後方散乱光の強度から、
上記歪等の程度を求めることができる。そして以上の後
方散乱光の発生地点は、これに対応する構内の地図また
は設備の外観等の表示と共にディスプレー装置４に表示
して監視をおこなうことができる。In the signal from the transmitter / receiver 2, the processor 3 can obtain the position of the scattering occurrence point as the distance along the optical fiber 5 from the delay time of the reflected backscattered light. It is possible to specify the position on the premises corresponding to the generation point of the backscattered light from the installation data of. Also, from the intensity of the backscattered light that has been reflected,
The degree of the above distortion and the like can be obtained. Then, the above-mentioned points where the backscattered light is generated can be displayed on the display device 4 for monitoring together with the display of the map of the premises or the appearance of the facility corresponding thereto.
【００１５】以上のような監視を行っている間、多重化
装置１３，１４を介して光ファイバ５に接続した送受信
装置１１，１２により、通話やデータ伝送等の光通信を
行うことができる。この光通信を行う光の波長は、上記
パルス光の波長とは適宜異ならせ、例えば上述したパル
ス光の波長に対しては、波長1.3μm程度のコヒーレント
光により通信を行う構成とする。While performing the above-mentioned monitoring, optical communication such as a telephone call or data transmission can be performed by the transmitter / receivers 11 and 12 connected to the optical fiber 5 via the multiplexers 13 and 14. The wavelength of the light used for the optical communication is made to be different from the wavelength of the pulsed light as appropriate, and for example, the wavelength of the pulsed light described above is configured to perform communication with coherent light having a wavelength of about 1.3 μm.
【００１６】[0016]
【発明の効果】本発明は以上の通りであるので、以下に
示すような効果がある。 パルス光の送受信装置に接続したセンサとしての光
ファイバを工場等の構内における所望の監視対象個所に
渡って設置することにより、温度ばかりでなく、設備等
の総合的な監視を簡単な構成で行うことができる。 センサとしての光ファイバを多重化して利用するこ
とにより、通話やデータ伝送等の光通信用回線として使
用することができ、他の回線の設置を省略することがで
きる。As described above, the present invention has the following effects. By installing an optical fiber as a sensor connected to a transmitter / receiver of pulsed light over desired monitoring points in a premises such as a factory, not only temperature but comprehensive monitoring of equipment etc. can be performed with a simple configuration. be able to. By multiplexing and using the optical fiber as a sensor, it can be used as a line for optical communication such as a telephone call and data transmission, and installation of other lines can be omitted.
【図１】本発明装置の全体構成を模式的に表した系統図
である。FIG. 1 is a system diagram schematically showing the overall configuration of a device of the present invention.
１ 監視装置本体 ２ 送受信装置 ３ 処理装置 ４ ディスプレー装置 ５ 光ファイバ ６ ピット ７，８ バルブ ９ 配管 １０ 支持部材 １１，１２ 送受信装置 １３，１４ 多重化装置 １５，１６ 地点 1 Monitoring device main body 2 Transmitting / receiving device 3 Processing device 4 Display device 5 Optical fiber 6 Pit 7,8 Valve 9 Piping 10 Supporting member 11,12 Transmitting / receiving device 13,14 Multiplexing device 15,16 points
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０２Ｂ 6/00 Ｇ０８Ｂ 25/01 9377−5Ｇ // Ｇ０１Ｎ 21/35 Ａ 7370−2Ｊ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical display location G02B 6/00 G08B 25/01 9377-5G // G01N 21/35 A 7370-2J
Claims (1)
イバを、工場等の構内における監視対象個所に渡って設
置すると共に、該光ファイバの適宜距離離れた少なくと
も２地点に多重化装置を介して光通信用の送受信装置を
設置したことを特徴とする工場等の監視装置1. An optical fiber connected to a transmission / reception device for pulsed light is installed over a monitoring target site in a premises such as a factory, and at least two points appropriately separated from the optical fiber via a multiplexing device. Monitoring equipment for factories, etc. characterized by installing a transceiver for optical communication
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34005392A JPH06186091A (en) | 1992-12-21 | 1992-12-21 | Device for monitoring premise of factory or like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34005392A JPH06186091A (en) | 1992-12-21 | 1992-12-21 | Device for monitoring premise of factory or like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06186091A true JPH06186091A (en) | 1994-07-08 |
Family
ID=18333276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34005392A Pending JPH06186091A (en) | 1992-12-21 | 1992-12-21 | Device for monitoring premise of factory or like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06186091A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0806642A1 (en) * | 1996-05-09 | 1997-11-12 | DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung | Method and device for the temperature of premises, especially for aircraft passenger compartments or cargo spaces |
| JP2010515094A (en) * | 2006-12-29 | 2010-05-06 | シュルンベルジェ ホールディングス リミテッド | Fault-tolerant distributed optical fiber intrusion detection |
| WO2013046976A1 (en) * | 2011-09-30 | 2013-04-04 | 株式会社日立製作所 | Optical fiber hydrogen sensor, hydrogen concentration measurement device, hydrogen concentration display device, and method for manufacturing optical fiber hydrogen sensor |
| WO2022149199A1 (en) * | 2021-01-06 | 2022-07-14 | 日本電気株式会社 | Optical fiber sensing system, host sensing device, remote sensing device, sensing method, and sensing device control method |
-
1992
- 1992-12-21 JP JP34005392A patent/JPH06186091A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0806642A1 (en) * | 1996-05-09 | 1997-11-12 | DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung | Method and device for the temperature of premises, especially for aircraft passenger compartments or cargo spaces |
| JP2010515094A (en) * | 2006-12-29 | 2010-05-06 | シュルンベルジェ ホールディングス リミテッド | Fault-tolerant distributed optical fiber intrusion detection |
| US8947232B2 (en) | 2006-12-29 | 2015-02-03 | Schlumberger Technology Corporation | Fault-tolerant distributed fiber optic intrusion detection |
| WO2013046976A1 (en) * | 2011-09-30 | 2013-04-04 | 株式会社日立製作所 | Optical fiber hydrogen sensor, hydrogen concentration measurement device, hydrogen concentration display device, and method for manufacturing optical fiber hydrogen sensor |
| JP2013076599A (en) * | 2011-09-30 | 2013-04-25 | Hitachi Ltd | Optical fiber hydrogen sensor, hydrogen concentration measurement device, hydrogen concentration display device, and method for manufacturing optical fiber hydrogen sensor |
| WO2022149199A1 (en) * | 2021-01-06 | 2022-07-14 | 日本電気株式会社 | Optical fiber sensing system, host sensing device, remote sensing device, sensing method, and sensing device control method |
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